Humidifier runs but produces very little or no visible mist.

Safety: Unplug and empty the tank before cleaning.

• Descale transducer: Clean the ultrasonic disc with vinegar solution as described for F2.
• Clear mist outlet: Check the mist nozzle and outlet channel for mineral deposits or debris. Clean with a soft brush.
• Check fan: Ensure the internal fan is running; if weak or not spinning, inspect and replace the fan motor.
• Use distilled water: To prevent future scaling, use distilled or demineralized water in Klarstein humidifiers.